﻿using System;
using System.Dynamic;

namespace ConsoleApp1
{
     public class Program
    {
        static void Main(string[] args)
        {
            Mango mango = new Mango();
            var add = mango.Add(1,2);
            var min = mango.Min(2, 1);
            var mul = mango.Mul(2, 2);
            var div = mango.Div(2, 2);
            Console.WriteLine("加{0}:减{1}:乘{2}：除{3}", add, min, mul, div);


            int hh = 20;
            Xx(ref hh);
            Console.WriteLine(hh);


            Console.ReadLine();
        }

        public static void Xx(ref int num)
        {
            num += 100;
        }
    }
}
